Methods and apparatuses for system information transmission and system information reception in a wireless communication system

Abstract

Embodiments of the present disclosure relate to a method and apparatus of data transmission in a wireless communication system and a method and apparatus of receiving data in a wireless communication system. The method of data reception comprises transmitting a request for the RRC message to the network node based on default transmission parameters; and receiving the RRC message from the network node at a predetermined time unit. With embodiments of the present disclosure, it is possible to request the RRC message when the terminal device need this message and therefore the RRC message transmission can be reduced and in turn, the inter-node interference can be limited, and the number of LBTs required for these signal transmissions can be reduced if they are transmitted on unlicensed spectrum.

What is claimed is: 
     
         1 . A method performed by a terminal device, the method comprising:
 transmitting, to a network device, a request for a system information based on a configuration index in a Physical Random Access Channel (PRACH), wherein the request comprises a preamble for the PRACH; and   receiving the system information from the network device based on a transmission timing, wherein the transmission timing is determined based on a periodicity of the system information.   
     
     
         2 . The method of  claim 1 , further comprising:
 receiving the system information based on a response window size and the transmission timing for the system information.   
     
     
         3 . The method of  claim 1 , wherein the system information is received via Physical Downlink Control Channel (PDCCH) or Physical Downlink Shared Channel (PDSCH). 
     
     
         4 . A method performed by a network device, the method comprising:
 receiving, from a terminal device, a request for a system information based on a configuration index in a Physical Random Access Channel (PRACH), wherein the request comprises a preamble for the PRACH; and   transmitting the system information from the network device based on a transmission timing, wherein the transmission timing is based on a periodicity of the system information.   
     
     
         5 . The method of  claim 4 , further comprising:
 transmitting the system information based on a response window size and the transmission timing for the system information.   
     
     
         6 . The method of  claim 4 , wherein the system information is transmitted via Physical Downlink Control Channel (PDCCH) or Physical Downlink Shared Channel (PDSCH). 
     
     
         7 . A terminal device, comprising:
 a transmitter configured to transmit, to a network device, a request for a system information based on a configuration index in a Physical Random Access Channel (PRACH), wherein the request comprises a preamble for the PRACH; and   a receiver configured to receive the system information from the network device based on a transmission timing, wherein the transmission timing is determined based on a periodicity of the system information.   
     
     
         8 . The terminal device of  claim 7 , wherein the system information is received based on a response window size and the transmission timing for the system information. 
     
     
         9 . The terminal device of  claim 7 , wherein the system information is received via Physical Downlink Control Channel (PDCCH) or Physical Downlink Shared Channel (PDSCH).